Question

нσω τσ cαℓcυℓατє мσℓαr мαss σƒ α sυвsταทcє?​.....

Not type irritate answer..✌️✌️​

Answer 1

Answer:

Step 1. Make use of the chemical formula to determine the number of atoms of each element in the compound.

Step 2. Multiply the atomic weight of each element with its number of atoms present in the compound.

Step 3. Add up all and assign unit as grams/mole.

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hope you get it ❣️

Answer 2

Answer:

Step 1.

Make use of the chemical formula to determine the number of atoms of each element in the compound.

Step 2.

Multiply the atomic weight of each element with its number of atoms present in the compound.

Step 3.

Add up all and assign unit as grams/mole.

Example:- Calculate molar mass of sodium carbonate, Na2CO3.

Solution:-

Since sodium carbonate contains two atoms sodium, one atom of carbon and three atoms of oxygen. The molecular weight would be

Na : 2 x 23.0 = 46

C : 1 x 12.0 = 12

O : 3 x 16 = 48

When we add up the total values i.e, 46 + 12 + 48 = 106

Therefore, the molar mass of Na2CO3 is 106 g/mole.